/* Variáveis de Tema Claro (Padrão) */
:root {
    --bg-color: #ffffff;
    --text-color: #333333;
    --primary-color: #005008; /* Verde Escuro */
    --secondary-color: #8CCC96; /* Verde Claro */
    --accent-color: #818487; /* Cinza */
    --card-bg: #f9f9f9;
    --border-radius: 16px;
    --transition-speed: 0.4s;
}

/* Variáveis de Tema Escuro */
[data-theme="dark"] {
    --bg-color: #121212;
    --text-color: #f4f4f4;
    --primary-color: #8CCC96; /* Invertido para destacar no escuro */
    --secondary-color: #005008;
    --accent-color: #818487;
    --card-bg: #1e1e1e;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color var(--transition-speed), color var(--transition-speed);
    overflow-x: hidden;
}

/* Header & Toggle */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 5%;
    background-color: var(--card-bg);
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

.theme-switch-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
}

.theme-switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 34px;
}

.theme-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: var(--accent-color);
    transition: var(--transition-speed);
}

.slider:before {
    position: absolute;
    content: "";
    height: 26px;
    width: 26px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: var(--transition-speed);
}

.slider.round { border-radius: 34px; }
.slider.round:before { border-radius: 50%; }
input:checked + .slider { background-color: var(--primary-color); }
input:checked + .slider:before { transform: translateX(26px); }

/* Seção Hero */
.hero {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    padding: 60px 5%;
    min-height: 70vh;
    gap: 40px;
}

.hero-content {
    flex: 1 1 400px;
}

.hero-content h1 {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    color: var(--accent-color);
    line-height: 1.6;
}

.cta-button {
    background-color: var(--primary-color);
    color: #fff;
    border: none;
    padding: 15px 30px;
    font-size: 1.1rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: transform 0.2s, background-color 0.2s;
}

.cta-button:hover {
    transform: scale(1.05);
    background-color: var(--secondary-color);
}

/* Placeholders */
.placeholder {
    flex: 1 1 400px;
    height: 400px;
    background-color: var(--card-bg);
    border: 2px dashed var(--accent-color);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-color);
    font-weight: bold;
}

.placeholder-icon {
    width: 60px;
    height: 60px;
    background-color: var(--secondary-color);
    border-radius: 50%;
    margin-bottom: 15px;
}

/* Funcionalidades */
.features {
    padding: 60px 5%;
    text-align: center;
}

.features h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 40px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background-color: var(--card-bg);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: 0 10px 20px rgba(0,0,0,0.05);
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-10px);
}

footer {
    text-align: center;
    padding: 20px;
    background-color: var(--card-bg);
    color: var(--accent-color);
}

/* Classes para Lazy Load e Animações */
.lazy-load {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.lazy-load.visible {
    opacity: 1;
    transform: translateY(0);
}